50515951 has 8 divisors (see below), whose sum is σ = 51312800. Its totient is φ = 49724928.

The previous prime is 50515939. The next prime is 50515961. The reversal of 50515951 is 15951505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50515951 is a prime.

It is a super-2 number, since 2×50515951² = 5103722610868802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50515921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17995 + ... + 20611.

It is an arithmetic number, because the mean of its divisors is an integer number (6414100).

Almost surely, 2^50515951 is an apocalyptic number.

50515951 is a deficient number, since it is larger than the sum of its proper divisors (796849).

50515951 is a wasteful number, since it uses less digits than its factorization.

50515951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913.

The product of its (nonzero) digits is 5625, while the sum is 31.

The square root of 50515951 is about 7107.4574216101. The cubic root of 50515951 is about 369.6660024639. Note that the first 3 decimals are identical.

The spelling of 50515951 in words is "fifty million, five hundred fifteen thousand, nine hundred fifty-one".